@inproceedings{DAC-1991-FangCFC,
	author        = "Sung-Chuan Fang and Kuo-En Chang and Wu-Shiung Feng and Sao-Jie Chen",
	booktitle     = "{Proceedings of the 28th Design Automation Conference}",
	doi           = "10.1145/127601.127629",
	isbn          = "0-89791395-7",
	pages         = "60--65",
	publisher     = "{ACM}",
	title         = "{Constrained via Minimization with Practical Considerations for Multi-Layer VLSI/PCB Routing Problems}",
	year          = 1991,
}